Abstract
Introduction
We aimed to investigate the utility of compressed sensing time-of-flight magnetic resonance angiography (CS TOF-MRA) for diagnosing intracranial and cervical arterial stenosis by using digital subtraction angiography (DSA) as the reference standard.
Methods
Thirty-seven patients with head and neck arterial stenoses who underwent CS TOF-MRA and DSA were retrospectively enrolled. The reconstructed resolution of CS TOF-MRA was 0.4 × 0.4 × 0.4 mm3. The scan time was 5 min and 2 s. The image quality of CS TOF-MRA was independently ranked by two neuroradiologists in 1031 arterial segments. The luminal stenosis grades on CS TOF-MRA and DSA were analyzed in 61 arterial segments and were compared using the Wilcoxon signed-rank test. The ability of CS TOF-MRA to predict moderate to severe stenosis or occlusion was analyzed.
Results
The image quality of most arterial segments (95.2%) on CS TOF-MRA was excellent. Arterial segments with low image quality were mainly the V3–4 segments of the vertebral artery. The majority of arterial stenoses (62.3%) were located in the cervical internal carotid artery. The luminal stenosis grades of CS TOF-MRA were concordant with that of DSA in 50 of 61 segments (p = 0.366). CS TOF-MRA had a sensitivity of 84.4% and a specificity of 88.5% for predicting moderate to severe stenosis. For detecting occlusion lesions, it had a sensitivity of 100% and a specificity of 94.1%.
Conclusion
CS TOF-MRA provides adequate image quality within a reasonable acquisition time and is a reliable tool for diagnosing head and neck arterial steno-occlusive disease.
Key Points
• CS TOF-MRA provides a relatively large coverage (16 cm), high resolution (0.4 × 0.4 × 0.4 mm 3 ) and good image quality of head and neck arteries within 5 min and 2 s.
• The diagnostic accuracy of CS TOF-MRA in the assessment of moderate to severe stenosis and occlusion was comparable with that of DSA.
• Arterial segments with low image quality were mainly the V3 and V4 segments of the vertebral artery.
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Abbreviations
- ACA:
-
Anterior cerebral artery
- BA:
-
Basilar artery
- CS TOF-MRA:
-
Compressed sensing time-of-flight magnetic resonance angiography
- DSA:
-
Digital subtraction angiography
- ICA:
-
Internal carotid artery
- MCA:
-
Middle cerebral artery
- mFISTA:
-
Modified fast iterative shrinkage-thresholding algorithm
- NASCET:
-
North American Symptomatic Carotid Endarterectomy Trial
- PCA:
-
Posterior cerebral artery
- PI:
-
Parallel imaging
- SNR:
-
Signal-to-noise ratio
- VA:
-
Vertebral artery
- WASID:
-
Warfarin Aspirin Symptomatic Intracranial Disease
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The scientific guarantor of this publication is Xun Ning Hong.
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Authors Yi Sun, Michaela Schmidt, Christoph Forman, and Peter Speier are employees of Siemens Healthcare. The remaining authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
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Zhang, X., Cao, Y.Z., Mu, X.H. et al. Highly accelerated compressed sensing time-of-flight magnetic resonance angiography may be reliable for diagnosing head and neck arterial steno-occlusive disease: a comparative study with digital subtraction angiography. Eur Radiol 30, 3059–3065 (2020). https://doi.org/10.1007/s00330-020-06682-3
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DOI: https://doi.org/10.1007/s00330-020-06682-3